diff --git a/README.md b/README.md
index 16648ce..2b977cf 100644
--- a/README.md
+++ b/README.md
@@ -148,7 +148,7 @@ var a = math.complex(3, -1)
 //=> { re: 3, im: -1 }
 
 var b = math.sqrt(-1)
-//=> { re: 0, im: -1 }
+//=> { re: 0, im: 1 }
 
 console.log(math.multiply(a, b).toString())
 //=> '1 + 3i'